Catalysis By Some Pillared Montmorillonites

In the present study, we have prepared and evaluated the physical and
chemical properties and catalytic activities of various single, mixed and modified
pillared montmorillonites. The single oxide pillared clays include AI-, Fe- and Cr-pillared
montmorillonites. The mixed oxide pillared montmorillonites such as Fe-AI
and Cr-AI pillared systems with various Fe(Cr)/Al ratios are also prepared.
Modification of iron-pillared system is done by vanadia impregnation.
Characterisation using various physico-chemical techniques and a detailed study of
acidic properties are also carried out. Major part of our work is oriented to evaluate
the catalytic activity of the pillared systems towards certain important catalytic
reactions. Our samples are found to be excellent catalysts for the reactions namely
Friedel-Crafts benzylation and benzoylation, methylation of aniline and catalytic wet
peroxide oxidation of phenol.

Description:

Department of Applied Chemistry,
Cochin University of Science and Technology